尿沉渣镜检细胞时,要以观察的高倍视野是()
A.3个
B.20个
C.10个
D.5个
E.15个
参考答案:C
When you introduce me to Mr Johnson,could you please say ________ for me?[ ]
A. everything
B. anything
C. something
D. nothing
乙酸属于()
A.易爆炸品
B.自燃及遇火燃烧的药品
C.易燃液体
D.极毒品及杀害性药品
E.腐蚀性药品